package collection;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;

public class LambdaDemo {
    public static void main(String[] args) {
        List<String> list = new ArrayList<>();

        //匿名内部类写法
        Collections.sort(list,new  Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                return o1.length() -  o2.length();
            }
        });

        //Lambda写法
        //new  Comparator<String>(){}可以不写,参数类型可以不写，返回值类型可以不写
        Collections.sort(list, ( o1,  o2) -> o1.length() -  o2.length());
    }
}
